Spatial concentration profiles of C-2-C-6 hydrocarbons in the atmosphere of Taipei metropolitan area

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题名:	Spatial concentration profiles of C-2-C-6 hydrocarbons in the atmosphere of Taipei metropolitan area
作者:	Ding,WH;Wang,JL
贡献者:	中央大學
关键词:	URBAN AIR;VEHICLES;GAS
日期:	1998
上传时间:	2010-06-29 19:47:52 (UTC+8)
出版者:	化學研究所
摘要:	The spatial concentration profiles of non-methane hydrocarbons in the atmosphere of the Taipei metropolitan area are reported to show their area dependence. Twenty C-2-C-6 hydrocarbons have been identified and quantified in 50 air samples using canisters and a GC/FID system. Statistical analysis indicates that a Weibull distribution was adequated to describe the probability distribution of most measured hydrocarbons. The average concentrations were estimated by the method of maximum likelihood. Relatively high concentrations of ethene (14.1 ppbv), ethyne (15.1 ppbv) and 2-methylbutane (12.8 ppbv) were observed. Comparison of NMHC concentration profiles with other cities and the high correlation coefficients among the measured C-2-C-6 hydrocarbons suggest that gasoline-fueled car and motorcycle emissions are the two major sources of NMHC in Taipei. However, lower correlation coefficients of ethane, propane, iso-butane and n-butane suggest additional sources of these gases. (C)1998 Elsevier Science Ltd. All rights reserved.
關聯:	CHEMOSPHERE
显示于类别:	[化學研究所] 期刊論文

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